Farm-derrick



(No Model.) 7 P. N. SWANSON. FARM DERRICK.

No. 591,612. Patented 001. 12,1897.-

. WITNESSES INVENTOR v A tlomzy UNITED STATES PATENT OFFICE.

PETER N. swANsoN, or GALVA, ILLINOIS.

FARM-DERRICK.

SPECIFICATION forming part of etters Patent No. 591,612, dated October12, 1897. Application filed January 20, 1897. Serial No. 619,849. (Nomodel.)

To all whom it may concern.-

Be it known that I, PETER N. SWANSON, a citizen of the United States,residing at Galva, in the county of Henry and State of Illinois, haveinvented certain new and useful Improvements in Farm-Derricks'; and I dohereby declare the following to be a full, clear,

' and exact description of the invention, such as will enable othersskilled in the art to which it appertains to make and use the same.

This invention has reference to a novel construction in a farm-derrick,the object being to provide a device of this character which can beconveniently set up in diiferent places and which can be used forremoving and replacing wagon-tops or hay-racks. I

The invention consists in the features of construction hereinafter fullydescribed and specifically claimed.

In the accompanying drawings, forming a part of this specification,Figure 1 is a perspective view of a derrick constructed in accordancewith this invention. Fig. 2 is atop plan of the same.

The said derrick can be supported from any suitable support, such as apost or the trunk of a tree, as indicated by 1, and upon the hooks 2fastened thereto. The said derrick consists of an upright 3, havingtapering sides, so that i it fits between the top pieces 4 andthe braces5. The said top pieces 4 are fastened together at an angle and aretapered at their rear ends to make a tapering joint, and the lower endsof the braces 5 are similarly made. The said tapering upright 3 issituated at .the crotch' made by the top pieces 4 and braces 5 and issuitably bolted to said parts. Straps 6 are fastened to the rear ends ofthe top pieces 4 and braces 5 and form hinges to receive the hooks 2.The braces 5 diverge upwardly and outwardly and meet the diverging endsof the I top pieces 4, to which they are secured, and

derrick is a cross-support 11, carrying. the guide-pulleys 12, and cordsor cables 13 are fastened to the winding-drum 9 and are guided by thepulleys 12 to the pulleys 8, over which they pass, and then around theblock and tackle in the manner shown. The said blocks are provided withtoggle-hooks 14,

' which consist of two pivoted jaws 15, having the extensionlti of saidjaws pivoted to two links 17, which links inturn are pivoted to the eyeor loop 18. The said eye or loop 18 is fastened to the block in theusual manner.

In use the wagon is driven below the outer end of the derrick and thecords are unwound sufficiently to allow the hooks to descend and whenextended to engage the sides of the hay-rack or wagon-top. It is seen,therefore, that when the cords are wound up bya pull upon the upper endof the tackle the hooks are held in engagement with the wagon-top,whereby the lattercan be lifted from the wagon, after which the derrickcan be moved to one side to allow the hay-rack or wagontop to bedeposited upon the ground. It is therefore noted that the wagon-top canbe as easily replaced, and that, furthermore, it can be done by oneperson.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is M v A derrick consisting of two top piecesfastened together atan angle and having their joining ends tapering, astrap around said tapering end, inclined converging braces having theirlower ends tapered and joined, a strap around the lower ends of saidbraces, an angular upright fastened between the crotches of said toppieces and braces, a crosspiece fastened to the outer ends of said toppieces and braces, a winding-drum upon said braces, and a cross-barhaving guide-pulleys at the upper and outer ends of said braces.

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses.

PETER N. SWANSON. Witnesses:

NEWMAN M. HENRY, JOHN A. BURG.

